The planning new pipelines /network of distribution division is based on experience basis not on calculations because with the passage of time distribution network has become so complex and interlinked that it cannot be planned on simple calculations. Therefore we are unable to find out the optimum size of the proposed new pipeline or network which results in proposing under or oversize pipelines causing bottlenecks or . Due to interlink ages we even cannot predict the direction of flow and pressure at any point on the network. Simulation software is the solution of above problems.

Now as we are entering into NGEP projects where segmentation is the basic requirement, the need of Simulation software become more vital. In order to isolate any area from the network we actually cut-off the supply of gas in the particular area from rest of the area which is done by installing two stopple fittings and a valve at all connected pipelines (which is quiet expensive and time consuming job). It happened many times when we close the isolation valve the area becomes low pressure, all the said efforts becomes wasted because this activity is based on experience not on calculations. If we would have Simulation software we can predict the effect of any activity on the area of consideration without actually carrying out the activity.

Therefore implementation of Simulation software not only helps us in segmentation of areas but also provide us the optimum size of new pipeline/network for Rehabilitation or extensions.

If the software is interfaced with all the sources (SMS/TBS) it would we would be able to find out bottlenecks of the network and we would be able to find out the direction of flow and pressures at any point on the network.